It doesn’t matter if the questions have been answered countless times with the same quotes given. The problem is that Joseph Smith verbally attacked Christianity by calling it the whore of babylon in 1 Nephi 14:10 for just one example and the body of Christ has a right and an obligation to stick up for truth.
As long as the LDS Church continues to believe and perpetuate the lies from Joseph Smith and other leaders there will always be someone to refute it.
Matthew 16:18 says the gates of hell shall not prevail against my church…Jesus was right. There will always be false prophets and false christs but Jesus guaranteed that His church would last forever and you are witnessing it first hand with the websites and Christian missionaries world wide that go out and preach truth.
As for “the one true church on the face of the earth”. There is indeed only one true church. It’s called the body of Christ, aka, Christianity.
BTW where do you think we get our info from? We READ the LDS Church’s words, papers, prophecies, conferences, magazines, website, etc. It all comes from the LDS Church.